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Jyutping wu4 lou4 si1
Pinyin hú lu sī

Definitions (Wiktionary)
  1. noun
    hulusi (Chinese free-reed wind instrument with three bamboo pipes that pass through a gourd wind chest; originating in Yunnan province)

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Jyutping wu4 lou4 si1
Pinyin hú lú sī

Definitions (CC-CEDICT)
  1. hulusi, aka cucurbit flute (a kind of free reed wind instrument)